Energy is not conserved
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Searching for “H-LOOP DOES NOT CONVERGE IN 9 TRIALS. ENERGY BALANCE NOT SATISFIED WITHIN MA*MUM NUMBER OF ITERATIONS.” on a certain search engine yields about ten results; each webpage was opened, but no useful information was found. I think this is a very valuable question, so I decided to post and ask for help again. The process is as follows: (The error occurred in the crystallizer.) By checking the flow information, it was found that: (1) and (2) the enthalpy difference of the flows in these two modules is very large! ! ! I consulted Aspentech, and the response I received was: (Very thoughtful; it seems quite useful.) Then I changed the DHFORM, DHVLDP, and DHVLWT values for the user-defined substance IS, but the impact on the results was minimal. What I simulated in the crystallizer was the transformation from liquid to solid; there was no gas-phase change involved. So I’m not quite sure about suggestions 2 and 3 given by Aspen Company Additionally, in the review, I found the following units to be related to enthalpy. I’m reaching out to fellow users for help again! Thank you very much for replying. (The source file is attached)
:D is asking for the contact information of Aspentech Company, OP
esupport@aspentech.com
The enthalpy value of a component is the sum of multiple physical quantities. I checked the enthalpy values of the abnormal components; the issue mainly lies in the calculation of the enthalpy deviation. The reason for the problem is the lack of the saturated vapor pressure value of the liquid phase. It is recommended that you add the saturated vapor pressure parameter for the sulfur component in Parameters\Pure Parameters|PLAXNT-1. ----Thank you to Terence Zhang from the Aspentech team for his answer
What is the incident number?